Answer:
height of building,H = 5.5 ft + 105.2 ft = 111 ft to the nearest ft.
Step-by-step explanation:
in this question we have given angle of elevation=
when surveyor walks 50m farther from the base of the tower that time angle of elevation=
As shown in figure in triangle ABD
.............(1)
or h=2.74x
and in triangle ABC
...........(2)
put value of h in equation 2
we got,

therefore,
Height of the tower is,h=2.74\times 38.39ft
h=105.2ft
Therefore,
height of building,H = 5.5 ft + 105.2 ft = 111 ft to the nearest ft.